Clean Energy Tied to National Security, Official Says By Claudette Roulo American Forces Press Service WASHINGTON, Feb. 7, 2013  The changing U.S. and international energy pictures have a profound effect on security, a senior Pentagon official said here yesterday. Sharon E. Burke, the assistant secretary of defense for Operational Energy Plans and Programs, told industry partners and congressional leaders at the American Council on Renewable Energy's National Renewable Energy Policy Forum that the motivation for seeking out clean energy sources is strongly rooted in national security interests. The International Energy Agency’s world energy outlook, released in November, is “the shot heard ’round the world,” Burke said. According to the report, she said, the world will need $37 trillion dollars in new investment in the energy supply system from now to 2035. Even as mature...